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Definition of Psilotales
1. Noun. Lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots.
Generic synonyms: Plant Order
Group relationships: Class Psilopsida, Class Psilotatae, Psilopsida, Psilotatae
Member holonyms: Family Psilotaceae, Psilotaceae
Lexicographical Neighbors of Psilotales
Literary usage of Psilotales
Below you will find example usage of this term as found in modern and/or classical literature:
1. A Textbook of Botany for Colleges and Universities by John Merle Coulter, Charles Reid Barnes, Henry Chandler Cowles (1910)
"(2) Psilotales This group of pteridophytes comprises two very small living genera:
Psilotum (fig. 330), with two species occurring in the tropics of both ..."
2. The Encyclopedia Americana: A Library of Universal Knowledge (1919)
"Various fragmentary specimens described as Psilotales are without value. Among the
doubtful forms that have been re- bted on the ..."
3. Botanical Gazette by University of Chicago, JSTOR (Organization) (1918)
"Psilotales.—'With the exception of LANG'S description of a single specimen,
provisionally referred to Psilotum, the gametophytes of the ..."
4. The American Naturalist by American Society of Naturalists, Essex Institute (1908)
"... with which latter group are included the anomalous Psilotales, which have
usually been associated with the Lycopods, but whose isolated position has for ..."
5. Report of the Annual Meeting (1907)
"Both vegetative and reproductive characters indicate a definite affinity between
the recent Psilotales and the ..."
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